Sanitary ware.



J. J. OOSGROVE.

SANITARY WARE.

APPLIOATION FILED JUNE 11. 1907 Patented Dec. '7, 1909.

2 SHEETS-SHEET 1,

J. J. GOSGROVE.

SANITARY WARE. APPLIGATION FILED JUNE 11, 1901'.

Patented Dec. 7, 1909.

Z SHEETS-SHEET 2.

insure TATES PATENT JOSEPH J. COSGROVE, DIE SCRANTON, PENNSYLVANIA,ASSIGNOR T0 STANDARD SANI- TARY MANUFACTURING GOMI?ANY, OF PITTSBUBG,PENNSYLVANIA, A COBEPOEA- TION OF NEVV' SANITARY NAB/E.

eraser.

Application filed June 11, 1907.

Specification of Letters Patent.

Patented Dec. 2 199% Serial No. 378,355.

. 1 in carrylng my invention 1nto effect, I

provide a water closet or similar article made of vitreous material,such as porcelain,

earthenware or glass, with a screw thread disposed in proximity to theextremity of the outlet passage and I attach to the closet, by means ofthe screw thread so provided, a metallic thimble which serves as amember of a coupling or connection between the closet and the soil pipewhich is connected thereto when the closet is placed in position on thefloor. In forming the screw thread in the outlet passage, I arrange ascrew threaded guide in fixed position adjacent to the water-closet and,while the latter is in a plastic condition, I screw a threaded tap, plugor former through the guide and into the outlet passage of the closet,thereby forming a screw thread in such outlet passa e conformingaccurately to the thread on the tap, plug or former. After the tap, plugor former has been screwed into the outlet passage as described it isunscrewed by a reverse movement, the guide serving to prevent anylateral movement or wabbling of the tap, plug or former during itsmovement in either direction. After the outlet passage of the watercloset has been screw-threaded in the manner above described, the watercloset is dried, fired and otherwise treated in the well known manner,the screw-thread in the outlet passage maintaining its original form andproportions.

Referring to the accompanying drawing: Figure 1 is a vertical sectionalview of the closet with the metallic thimble detached. Fig. 2 is asimilar view with the thimble in attached position. Fig. 3 is a verticalsectional view showing the closet connected to a soil pipe. Fig. a is avertical sectional view of a portion of an earthenware closet and of theguide and tap, plug, or former mounted in the guide, the parts being inthe position they occupy before the screw-thread has been forn'ied inthe outlet passage of the closet.

' Fig. is a view similar to Fig. 1, showing "3 the same parts after thescrew-thread has been formed in the outlet passage of the 'ater-closet.Flg. 6 1s a plan view of the same.

The body of the closet is not fully shown, as it 1s unnecessary to showthe same and l designates a portion of the base of the closet, the basebeing shown in an inverted position in Flgs. 4: and 5, 111 whichposition it is preferably maintained during the operation of forming thescrew-thread. The base 1 is formed with a circular recess 3, andcentrally of this recess is located the outlet pal sage The closet,while being operated on to form the screw-thread in the outlet passage,is in a plastic or workable condition. Upon the base 1, within therecess 3, is mounted a guide 5, which is in the form of a tubularsection having at its lower end a ring or flange having radial spokes 6,this ring rests upon the bottom of recess 3, and serves to center theguide with its central axis coincident with the central axis of theoutlet passage 4. The inner vertical surface of the guide 5, is formedwith a screw thread 7, which may be of any desired pitch and form,preferably either the United States standard or the English standardthread of somewhat coarse pitch. Nithin the guide 5 is located a tap,plug or former S which of tubular form and has a closed upper end 9,carrying a stem 10, to which is secured a handle 11, by means of whichthe tap, plug or former is turned in the guide The tap, plug or former8, which will be hereinafter called the tap, is provided with anexternal screw-thread 12 which conforms in pitch, and shape to thescrew-thread 7, 011 the inner surface of the guide. The inner wall ofthe guide is vertical throughout and consequently the central cavity ofthe guide is of even diameter throughout, the tap, however, varies indiameter, the upper portion being of even diameter from the top to, say,the point indicated by a dotted line, while the lower portion tapersinwardly from the dotted line to the bottom of the tap for the purposeof giving a'tapered screw-threaded form to the outlet passage. The lowerend of the tap is formed with a cutting edge 13, for the purpose ofcutting away any surplus clay that may remain before the screw-thread isformed in the outlet passage of the closet.

The outlet passage 4 of the closet is, previously to the formation ofthe screw-thread therein, of even diameter and of a diameter not morethan the smallest diameter of the tap at the bottom of the thread at itslower end. lVhile the part 8 has, for brevity, been called a tap, itwill be observed that it is devoid of the usual longitudinal grooves,the thread being therefore continuous from end to end which I have foundin practice, produces a better thread for the purpose than where agrooved tap is used.

In operation the above described apparatus used in the following manner:The water-closet, while in a plastic or workable condition, is placed onthe floor or work table bottom up, the closet being provided, as shownin Fig. at, with an outlet passage having a smooth wall and the saidpassage being of even diameter throughout but of not greater diameterthan the diameter of the tap at the bottom of the thread at the lowerend of the tap. The guide 5 is then placed in position in the recess 8,the legs 6 serving to center the guide relatively to the outlet passage4 of the closet, the tap 8 being in such position that its lower end isjust about to enter the outlet passage. The tap is now screwed down inthe guide by means of the handle 11 and if there is any surplus materialaround the walls of the outlet passage the same will be cut away by thecutting edge at the lower end of the tap. As the tap is screweddownwardly in the guide, the tapered and threaded lower end of the tapgradually enters the outlet passage and, acting on the plastic materialof which the closet is composed, molds or shapes the wall of the outletpassage and forms thereon a screw-thread corresponding exactly to thescrew-thread on the lower tapered portion of the tap. In this, thepreferred manner of carrying my invention into effect, the plasticmaterial is not cut away during the formation of the screw-thread in theoutlet passage except such preliminary cutting away of surplus materialas may be incidentally effected by the sharp lower end of the tap, butthe plastic material is pressed or forced outwardly by the tap andsomewhat compacted adjacent the wall of the outlet passage as indicatedby the thickened hatching in Fig. lVhen the tap has been screwed down inthe guide a sufficient distance to form the desired length of thread inthe outlet passage, it is unscrewed by a reverse movement of the handleuntil it is entirely removed from theoutlet passage, leaving the latterslightly tapered and with a regular and even thread, having a cleansmooth surface perfectly adapted to receive a coincidently tapered andthreaded spigot or connecting member, by means of which the closet maybe connected to the drain or soil pipe. In both the downward and theupward movement of the tap, the upper portion of the tap, which, asbefore described, is of even diameter and not tapered like the lowerportion, serves to accurately guide the tap in a perfectly straight lineand prevent it from moving laterally or wabbling and thus serves toeffeet the formation of a perfectly smooth even and regular screw-threadin the outlet passage of the closet. After the screw thread has beenproduced in the outlet passage as described, the guide with itscontained tap is removed and the'closet is then dried, fired andotherwise treated in. the ordinary and well known manner. After thearticle has been baked and if necessary, glazed, a metallic thimble 14,which is formed with a screw-thread 15, is screwed into the outletpassage, the screw-thread on the thimble engaging the screw-thread inthe outlet passage and thus forming a tight,

rigid connection between the thimble and the closet.

If necessary, the threads may be leaded and, as an additional precautionagainst leakage, a gasket 16 may be interposed between the bottom of thecloset and a shoulder 1? formed on the thimble.

The thimble la is preferably formed with a spherical end 18, thespherical end fitting into a spherical seat 19 formed in a socket orhell 20 carried by a soil pipe 21. The socket or bell is formed with aflange 23 and this flange is connected to the base of the closet bymeans of bolts 24.

I claim:

1. A watercloset of vitreous sanitary ware having an integral screw-thread formed on the inner wall of its outlet passage. .7

2. A water-closet of vitreous sanitary ware having an integralscrew-thread formed on the inner wall of its outlet passage and ametallic thimble screwed into said outlet passage.

3. A water-closet of vitreous material having an outlet passage with anintegral molded screw-thread formed thereon, in combination with ascrew-threaded metallic thimble engaging the screw-thread on the outletpassage.

In testimony whereof I aflix my signature, in presence of two witnesses.

JGSEPH J. COSGROVE. lVitnesses Jos. B. CoNNoLLY, CLYDE B. VVEIKERT.

